A 225 is a "big" motor -
for safety I would personally opt for a double cable system such as Teleflex "no feedback" rotary or rack twin cable systems (discount price around 400 bucks)
A hydraulic option (such as SeaStar) would run you double that, but is a far superior steering system.
Even the best cared for steering can seize a cable - with the cable systems it is almost always cheaper to replace the entire unit than just the cables.
In the long run the costs will equal out - you will put in your second cable system before the hydraulic gives you any issues.....